Using headers in presigned urls

Hi guys!

I’m changing from boto2 and I’ve stopped in generation of presigned urls. With boto2 we can give headers to generate presigned urls, but with boto3 I didn’t found this option. I need to give a Content-Type header to upload a video with correct content type.

My actual code with boto2:

s3 = boto.connect_s3()
headers = [{'Content-Type': 'image/jpeg'}]
return s3.generate_url(7200, 'PUT', 'my-bucket', 'my-key', headers)

Am I missing something? There is a way to give headers to generate_presigned_url?

Thanks in advance!

[kyleknap]

So there is no parameter for custom headers in boto3’s generate_presigned_url. The headers get added based on the parameters that you would normally pass to the client’s method. So something like this:

import boto3

s3 = boto3.client('s3')

# Generate the URL to get 'key-name' from 'bucket-name'
url = s3.generate_presigned_url(
    ClientMethod='put_object',
    Params={
        'Bucket': 'bucket-name',
        'Key': 'key-name',
        'ContentType': 'image/jpeg'
    }
)
print(url)

Hopes this helps.

[random1st]

Full situation. I create request to service with Content-Type header. After I redirect request to AWS S3 service(302 Redirect). And S3 check request and raise “SignatureDoesNotMatch” exception. With url, generated with old boto, all work correct. I created new issue https://github.com/boto/boto3/issues/610